Home / 817,416.18-1,226,124.95-390,851.64

Finding the Fourth Proportional to 817,416.18, 1,226,124.95 and 390,851.64

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Solution

The fourth proportional to 817,416.18, 1,226,124.95 and 390,851.64 is: 586,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,416.18 : 1,226,124.95 = 390,851.64 : x
  2. Step 2: Convert to fraction form
    817,416.18/1,226,124.95 = 390,851.64/x
  3. Step 3: Cross multiply
    817,416.18x = 1,226,124.95 × 390,851.64
  4. Step 4: Simplify right side
    817,416.18x = 479,232,945,598.16
  5. Step 5: Solve for x
    x = 479,232,945,598.16/817,416.18
  6. Step 6: Final answer
    x = 586,277.78

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Double scale
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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.