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Finding the Fourth Proportional to 621,581,730.40, 930,581,005.20 and 621,581,730.40

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Solution

The fourth proportional to 621,581,730.40, 930,581,005.20 and 621,581,730.40 is: 930,581,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,581,730.40 : 930,581,005.20 = 621,581,730.40 : x
  2. Step 2: Convert to fraction form
    621,581,730.40/930,581,005.20 = 621,581,730.40/x
  3. Step 3: Cross multiply
    621,581,730.40x = 930,581,005.20 × 621,581,730.40
  4. Step 4: Simplify right side
    621,581,730.40x = 578,432,151,489,587,456
  5. Step 5: Solve for x
    x = 578,432,151,489,587,456/621,581,730.40
  6. Step 6: Final answer
    x = 930,581,005.20

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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.