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Finding the Fourth Proportional to 696,011,978.90, 960,514,734.71 and 378,490,795.40

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Solution

The fourth proportional to 696,011,978.90, 960,514,734.71 and 378,490,795.40 is: 522,327,196.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,011,978.90 : 960,514,734.71 = 378,490,795.40 : x
  2. Step 2: Convert to fraction form
    696,011,978.90/960,514,734.71 = 378,490,795.40/x
  3. Step 3: Cross multiply
    696,011,978.90x = 960,514,734.71 × 378,490,795.40
  4. Step 4: Simplify right side
    696,011,978.90x = 363,545,985,937,155,392
  5. Step 5: Solve for x
    x = 363,545,985,937,155,392/696,011,978.90
  6. Step 6: Final answer
    x = 522,327,196.88

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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.