Home / 771,438.51-1,064,337.49-499,714.69

Finding the Fourth Proportional to 771,438.51, 1,064,337.49 and 499,714.69

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Solution

The fourth proportional to 771,438.51, 1,064,337.49 and 499,714.69 is: 689,445.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,438.51 : 1,064,337.49 = 499,714.69 : x
  2. Step 2: Convert to fraction form
    771,438.51/1,064,337.49 = 499,714.69/x
  3. Step 3: Cross multiply
    771,438.51x = 1,064,337.49 × 499,714.69
  4. Step 4: Simplify right side
    771,438.51x = 531,865,078,870.73
  5. Step 5: Solve for x
    x = 531,865,078,870.73/771,438.51
  6. Step 6: Final answer
    x = 689,445.85

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Double scale
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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.