Home / 870,870.80-1,306,306.20-496,931.60

Finding the Fourth Proportional to 870,870.80, 1,306,306.20 and 496,931.60

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Solution

The fourth proportional to 870,870.80, 1,306,306.20 and 496,931.60 is: 745,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,870.80 : 1,306,306.20 = 496,931.60 : x
  2. Step 2: Convert to fraction form
    870,870.80/1,306,306.20 = 496,931.60/x
  3. Step 3: Cross multiply
    870,870.80x = 1,306,306.20 × 496,931.60
  4. Step 4: Simplify right side
    870,870.80x = 649,144,830,055.92
  5. Step 5: Solve for x
    x = 649,144,830,055.92/870,870.80
  6. Step 6: Final answer
    x = 745,397.40

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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.