Home / 442,828,981.80-663,986,488.92-209,657,736.24

Finding the Fourth Proportional to 442,828,981.80, 663,986,488.92 and 209,657,736.24

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Solution

The fourth proportional to 442,828,981.80, 663,986,488.92 and 209,657,736.24 is: 314,364,935.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,828,981.80 : 663,986,488.92 = 209,657,736.24 : x
  2. Step 2: Convert to fraction form
    442,828,981.80/663,986,488.92 = 209,657,736.24/x
  3. Step 3: Cross multiply
    442,828,981.80x = 663,986,488.92 × 209,657,736.24
  4. Step 4: Simplify right side
    442,828,981.80x = 139,209,904,160,913,040
  5. Step 5: Solve for x
    x = 139,209,904,160,913,040/442,828,981.80
  6. Step 6: Final answer
    x = 314,364,935.18

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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.