Home / 689,705.46-951,683.89-387,841.14

Finding the Fourth Proportional to 689,705.46, 951,683.89 and 387,841.14

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Solution

The fourth proportional to 689,705.46, 951,683.89 and 387,841.14 is: 535,159.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,705.46 : 951,683.89 = 387,841.14 : x
  2. Step 2: Convert to fraction form
    689,705.46/951,683.89 = 387,841.14/x
  3. Step 3: Cross multiply
    689,705.46x = 951,683.89 × 387,841.14
  4. Step 4: Simplify right side
    689,705.46x = 369,102,164,817.24
  5. Step 5: Solve for x
    x = 369,102,164,817.24/689,705.46
  6. Step 6: Final answer
    x = 535,159.12

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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.