Home / 989,285.40-1,482,834.60-390,047.40

Finding the Fourth Proportional to 989,285.40, 1,482,834.60 and 390,047.40

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Solution

The fourth proportional to 989,285.40, 1,482,834.60 and 390,047.40 is: 584,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,285.40 : 1,482,834.60 = 390,047.40 : x
  2. Step 2: Convert to fraction form
    989,285.40/1,482,834.60 = 390,047.40/x
  3. Step 3: Cross multiply
    989,285.40x = 1,482,834.60 × 390,047.40
  4. Step 4: Simplify right side
    989,285.40x = 578,375,780,360.04
  5. Step 5: Solve for x
    x = 578,375,780,360.04/989,285.40
  6. Step 6: Final answer
    x = 584,639.96

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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.