Home / 690,525,070.65-952,924,979.76-372,985,314.92

Finding the Fourth Proportional to 690,525,070.65, 952,924,979.76 and 372,985,314.92

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Solution

The fourth proportional to 690,525,070.65, 952,924,979.76 and 372,985,314.92 is: 514,719,941.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,525,070.65 : 952,924,979.76 = 372,985,314.92 : x
  2. Step 2: Convert to fraction form
    690,525,070.65/952,924,979.76 = 372,985,314.92/x
  3. Step 3: Cross multiply
    690,525,070.65x = 952,924,979.76 × 372,985,314.92
  4. Step 4: Simplify right side
    690,525,070.65x = 355,427,023,664,288,704
  5. Step 5: Solve for x
    x = 355,427,023,664,288,704/690,525,070.65
  6. Step 6: Final answer
    x = 514,719,941.06

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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.