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Finding the Fourth Proportional to 495,703.98, 684,073.77 and 280,885.89

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Solution

The fourth proportional to 495,703.98, 684,073.77 and 280,885.89 is: 387,623.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,703.98 : 684,073.77 = 280,885.89 : x
  2. Step 2: Convert to fraction form
    495,703.98/684,073.77 = 280,885.89/x
  3. Step 3: Cross multiply
    495,703.98x = 684,073.77 × 280,885.89
  4. Step 4: Simplify right side
    495,703.98x = 192,146,669,712.11
  5. Step 5: Solve for x
    x = 192,146,669,712.11/495,703.98
  6. Step 6: Final answer
    x = 387,623.82

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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.