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Finding the Fourth Proportional to 978,103,502.96, 1,350,402,422.65 and 607,219,095.92

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Solution

The fourth proportional to 978,103,502.96, 1,350,402,422.65 and 607,219,095.92 is: 838,347,000.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,103,502.96 : 1,350,402,422.65 = 607,219,095.92 : x
  2. Step 2: Convert to fraction form
    978,103,502.96/1,350,402,422.65 = 607,219,095.92/x
  3. Step 3: Cross multiply
    978,103,502.96x = 1,350,402,422.65 × 607,219,095.92
  4. Step 4: Simplify right side
    978,103,502.96x = 819,990,138,201,440,640
  5. Step 5: Solve for x
    x = 819,990,138,201,440,640/978,103,502.96
  6. Step 6: Final answer
    x = 838,347,000.83

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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.