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Finding the Fourth Proportional to 712,389,943.40, 1,068,584,915.10 and 712,389,943.40

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Solution

The fourth proportional to 712,389,943.40, 1,068,584,915.10 and 712,389,943.40 is: 1,068,584,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,389,943.40 : 1,068,584,915.10 = 712,389,943.40 : x
  2. Step 2: Convert to fraction form
    712,389,943.40/1,068,584,915.10 = 712,389,943.40/x
  3. Step 3: Cross multiply
    712,389,943.40x = 1,068,584,915.10 × 712,389,943.40
  4. Step 4: Simplify right side
    712,389,943.40x = 761,249,147,186,182,784
  5. Step 5: Solve for x
    x = 761,249,147,186,182,784/712,389,943.40
  6. Step 6: Final answer
    x = 1,068,584,915.10

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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.