Home / 1,020,672.30-1,531,591.65-390,038.70

Finding the Fourth Proportional to 1,020,672.30, 1,531,591.65 and 390,038.70

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Solution

The fourth proportional to 1,020,672.30, 1,531,591.65 and 390,038.70 is: 585,280.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,672.30 : 1,531,591.65 = 390,038.70 : x
  2. Step 2: Convert to fraction form
    1,020,672.30/1,531,591.65 = 390,038.70/x
  3. Step 3: Cross multiply
    1,020,672.30x = 1,531,591.65 × 390,038.70
  4. Step 4: Simplify right side
    1,020,672.30x = 597,380,016,096.86
  5. Step 5: Solve for x
    x = 597,380,016,096.86/1,020,672.30
  6. Step 6: Final answer
    x = 585,280.91

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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.