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Finding the Fourth Proportional to 505,366.77, 696,492.71 and 418,870.23

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Solution

The fourth proportional to 505,366.77, 696,492.71 and 418,870.23 is: 577,283.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,366.77 : 696,492.71 = 418,870.23 : x
  2. Step 2: Convert to fraction form
    505,366.77/696,492.71 = 418,870.23/x
  3. Step 3: Cross multiply
    505,366.77x = 696,492.71 × 418,870.23
  4. Step 4: Simplify right side
    505,366.77x = 291,740,061,631.02
  5. Step 5: Solve for x
    x = 291,740,061,631.02/505,366.77
  6. Step 6: Final answer
    x = 577,283.82

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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.