Home / 663,752,080.57-915,972,642.61-385,319,492.41

Finding the Fourth Proportional to 663,752,080.57, 915,972,642.61 and 385,319,492.41

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Solution

The fourth proportional to 663,752,080.57, 915,972,642.61 and 385,319,492.41 is: 531,737,864.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,752,080.57 : 915,972,642.61 = 385,319,492.41 : x
  2. Step 2: Convert to fraction form
    663,752,080.57/915,972,642.61 = 385,319,492.41/x
  3. Step 3: Cross multiply
    663,752,080.57x = 915,972,642.61 × 385,319,492.41
  4. Step 4: Simplify right side
    663,752,080.57x = 352,942,113,711,931,584
  5. Step 5: Solve for x
    x = 352,942,113,711,931,584/663,752,080.57
  6. Step 6: Final answer
    x = 531,737,864.25

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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.