Home / 985,154.76-1,359,486.36-555,431.10

Finding the Fourth Proportional to 985,154.76, 1,359,486.36 and 555,431.10

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Solution

The fourth proportional to 985,154.76, 1,359,486.36 and 555,431.10 is: 766,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,154.76 : 1,359,486.36 = 555,431.10 : x
  2. Step 2: Convert to fraction form
    985,154.76/1,359,486.36 = 555,431.10/x
  3. Step 3: Cross multiply
    985,154.76x = 1,359,486.36 × 555,431.10
  4. Step 4: Simplify right side
    985,154.76x = 755,101,004,369.80
  5. Step 5: Solve for x
    x = 755,101,004,369.80/985,154.76
  6. Step 6: Final answer
    x = 766,479.58

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Half scale
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Double scale
Find fourth proportional to 985,155.76, 1,359,487.74 and 555,432.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.