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Finding the Fourth Proportional to 711,397.30, 997,615.10 and 711,397.30

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Solution

The fourth proportional to 711,397.30, 997,615.10 and 711,397.30 is: 997,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,397.30 : 997,615.10 = 711,397.30 : x
  2. Step 2: Convert to fraction form
    711,397.30/997,615.10 = 711,397.30/x
  3. Step 3: Cross multiply
    711,397.30x = 997,615.10 × 711,397.30
  4. Step 4: Simplify right side
    711,397.30x = 709,700,688,579.23
  5. Step 5: Solve for x
    x = 709,700,688,579.23/711,397.30
  6. Step 6: Final answer
    x = 997,615.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.