Home / 688,305,818.45-1,031,723,549.10-392,564,216.36

Finding the Fourth Proportional to 688,305,818.45, 1,031,723,549.10 and 392,564,216.36

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Solution

The fourth proportional to 688,305,818.45, 1,031,723,549.10 and 392,564,216.36 is: 588,427,027.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,305,818.45 : 1,031,723,549.10 = 392,564,216.36 : x
  2. Step 2: Convert to fraction form
    688,305,818.45/1,031,723,549.10 = 392,564,216.36/x
  3. Step 3: Cross multiply
    688,305,818.45x = 1,031,723,549.10 × 392,564,216.36
  4. Step 4: Simplify right side
    688,305,818.45x = 405,017,746,547,440,896
  5. Step 5: Solve for x
    x = 405,017,746,547,440,896/688,305,818.45
  6. Step 6: Final answer
    x = 588,427,027.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.