Home / 712,303,670.40-1,068,455,505.60-642,011,740.80

Finding the Fourth Proportional to 712,303,670.40, 1,068,455,505.60 and 642,011,740.80

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Solution

The fourth proportional to 712,303,670.40, 1,068,455,505.60 and 642,011,740.80 is: 963,017,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,303,670.40 : 1,068,455,505.60 = 642,011,740.80 : x
  2. Step 2: Convert to fraction form
    712,303,670.40/1,068,455,505.60 = 642,011,740.80/x
  3. Step 3: Cross multiply
    712,303,670.40x = 1,068,455,505.60 × 642,011,740.80
  4. Step 4: Simplify right side
    712,303,670.40x = 685,960,979,117,600,128
  5. Step 5: Solve for x
    x = 685,960,979,117,600,128/712,303,670.40
  6. Step 6: Final answer
    x = 963,017,611.20

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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.