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Finding the Fourth Proportional to 495,508.40, 739,518.16 and 447,678.80

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Solution

The fourth proportional to 495,508.40, 739,518.16 and 447,678.80 is: 668,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,508.40 : 739,518.16 = 447,678.80 : x
  2. Step 2: Convert to fraction form
    495,508.40/739,518.16 = 447,678.80/x
  3. Step 3: Cross multiply
    495,508.40x = 739,518.16 × 447,678.80
  4. Step 4: Simplify right side
    495,508.40x = 331,066,602,447.01
  5. Step 5: Solve for x
    x = 331,066,602,447.01/495,508.40
  6. Step 6: Final answer
    x = 668,135.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.