Home / 711,026,050.12-981,217,389.52-397,765,495.46

Finding the Fourth Proportional to 711,026,050.12, 981,217,389.52 and 397,765,495.46

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Solution

The fourth proportional to 711,026,050.12, 981,217,389.52 and 397,765,495.46 is: 548,917,189.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,026,050.12 : 981,217,389.52 = 397,765,495.46 : x
  2. Step 2: Convert to fraction form
    711,026,050.12/981,217,389.52 = 397,765,495.46/x
  3. Step 3: Cross multiply
    711,026,050.12x = 981,217,389.52 × 397,765,495.46
  4. Step 4: Simplify right side
    711,026,050.12x = 390,294,421,096,390,592
  5. Step 5: Solve for x
    x = 390,294,421,096,390,592/711,026,050.12
  6. Step 6: Final answer
    x = 548,917,189.50

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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.