Home / 1,122,818.76-1,549,488.24-639,384

Finding the Fourth Proportional to 1,122,818.76, 1,549,488.24 and 639,384

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Solution

The fourth proportional to 1,122,818.76, 1,549,488.24 and 639,384 is: 882,348.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,818.76 : 1,549,488.24 = 639,384 : x
  2. Step 2: Convert to fraction form
    1,122,818.76/1,549,488.24 = 639,384/x
  3. Step 3: Cross multiply
    1,122,818.76x = 1,549,488.24 × 639,384
  4. Step 4: Simplify right side
    1,122,818.76x = 990,717,988,844.16
  5. Step 5: Solve for x
    x = 990,717,988,844.16/1,122,818.76
  6. Step 6: Final answer
    x = 882,348.98

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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.