Home / 495,711.09-684,079.63-280,892.10

Finding the Fourth Proportional to 495,711.09, 684,079.63 and 280,892.10

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Solution

The fourth proportional to 495,711.09, 684,079.63 and 280,892.10 is: 387,630.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,711.09 : 684,079.63 = 280,892.10 : x
  2. Step 2: Convert to fraction form
    495,711.09/684,079.63 = 280,892.10/x
  3. Step 3: Cross multiply
    495,711.09x = 684,079.63 × 280,892.10
  4. Step 4: Simplify right side
    495,711.09x = 192,152,565,700.99
  5. Step 5: Solve for x
    x = 192,152,565,700.99/495,711.09
  6. Step 6: Final answer
    x = 387,630.15

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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.