Home / 921,740.04-1,270,913.22-631,490.76

Finding the Fourth Proportional to 921,740.04, 1,270,913.22 and 631,490.76

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Solution

The fourth proportional to 921,740.04, 1,270,913.22 and 631,490.76 is: 870,711.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,740.04 : 1,270,913.22 = 631,490.76 : x
  2. Step 2: Convert to fraction form
    921,740.04/1,270,913.22 = 631,490.76/x
  3. Step 3: Cross multiply
    921,740.04x = 1,270,913.22 × 631,490.76
  4. Step 4: Simplify right side
    921,740.04x = 802,569,955,191.85
  5. Step 5: Solve for x
    x = 802,569,955,191.85/921,740.04
  6. Step 6: Final answer
    x = 870,711.83

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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.