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Finding the Fourth Proportional to 676,561.64, 933,301.08 and 418,356.05

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Solution

The fourth proportional to 676,561.64, 933,301.08 and 418,356.05 is: 577,112.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,561.64 : 933,301.08 = 418,356.05 : x
  2. Step 2: Convert to fraction form
    676,561.64/933,301.08 = 418,356.05/x
  3. Step 3: Cross multiply
    676,561.64x = 933,301.08 × 418,356.05
  4. Step 4: Simplify right side
    676,561.64x = 390,452,148,623.03
  5. Step 5: Solve for x
    x = 390,452,148,623.03/676,561.64
  6. Step 6: Final answer
    x = 577,112.46

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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.