Home / 877,376.80-1,316,065.20-316,411.30

Finding the Fourth Proportional to 877,376.80, 1,316,065.20 and 316,411.30

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Solution

The fourth proportional to 877,376.80, 1,316,065.20 and 316,411.30 is: 474,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,376.80 : 1,316,065.20 = 316,411.30 : x
  2. Step 2: Convert to fraction form
    877,376.80/1,316,065.20 = 316,411.30/x
  3. Step 3: Cross multiply
    877,376.80x = 1,316,065.20 × 316,411.30
  4. Step 4: Simplify right side
    877,376.80x = 416,417,900,816.76
  5. Step 5: Solve for x
    x = 416,417,900,816.76/877,376.80
  6. Step 6: Final answer
    x = 474,616.95

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Double scale
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Similar ratio
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1.5x scale

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.