Home / 719,799,430.40-1,079,699,145.60-663,112,390.40

Finding the Fourth Proportional to 719,799,430.40, 1,079,699,145.60 and 663,112,390.40

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Solution

The fourth proportional to 719,799,430.40, 1,079,699,145.60 and 663,112,390.40 is: 994,668,585.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,799,430.40 : 1,079,699,145.60 = 663,112,390.40 : x
  2. Step 2: Convert to fraction form
    719,799,430.40/1,079,699,145.60 = 663,112,390.40/x
  3. Step 3: Cross multiply
    719,799,430.40x = 1,079,699,145.60 × 663,112,390.40
  4. Step 4: Simplify right side
    719,799,430.40x = 715,961,881,351,653,504
  5. Step 5: Solve for x
    x = 715,961,881,351,653,504/719,799,430.40
  6. Step 6: Final answer
    x = 994,668,585.60

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Double scale
Find fourth proportional to 719,799,431.40, 1,079,699,147.10 and 663,112,391.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.