Home / 672,443,697.17-927,995,377.43-390,164,822.39

Finding the Fourth Proportional to 672,443,697.17, 927,995,377.43 and 390,164,822.39

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Solution

The fourth proportional to 672,443,697.17, 927,995,377.43 and 390,164,822.39 is: 538,440,843.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,443,697.17 : 927,995,377.43 = 390,164,822.39 : x
  2. Step 2: Convert to fraction form
    672,443,697.17/927,995,377.43 = 390,164,822.39/x
  3. Step 3: Cross multiply
    672,443,697.17x = 927,995,377.43 × 390,164,822.39
  4. Step 4: Simplify right side
    672,443,697.17x = 362,071,151,607,126,144
  5. Step 5: Solve for x
    x = 362,071,151,607,126,144/672,443,697.17
  6. Step 6: Final answer
    x = 538,440,843.65

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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.