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Finding the Fourth Proportional to 676,585.32, 933,675.30 and 390,117.48

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Solution

The fourth proportional to 676,585.32, 933,675.30 and 390,117.48 is: 538,354.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,585.32 : 933,675.30 = 390,117.48 : x
  2. Step 2: Convert to fraction form
    676,585.32/933,675.30 = 390,117.48/x
  3. Step 3: Cross multiply
    676,585.32x = 933,675.30 × 390,117.48
  4. Step 4: Simplify right side
    676,585.32x = 364,243,055,174.24
  5. Step 5: Solve for x
    x = 364,243,055,174.24/676,585.32
  6. Step 6: Final answer
    x = 538,354.95

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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.