Home / 960,021.20-1,440,031.80-517,653.20

Finding the Fourth Proportional to 960,021.20, 1,440,031.80 and 517,653.20

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Solution

The fourth proportional to 960,021.20, 1,440,031.80 and 517,653.20 is: 776,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    960,021.20 : 1,440,031.80 = 517,653.20 : x
  2. Step 2: Convert to fraction form
    960,021.20/1,440,031.80 = 517,653.20/x
  3. Step 3: Cross multiply
    960,021.20x = 1,440,031.80 × 517,653.20
  4. Step 4: Simplify right side
    960,021.20x = 745,437,069,371.76
  5. Step 5: Solve for x
    x = 745,437,069,371.76/960,021.20
  6. Step 6: Final answer
    x = 776,479.80

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.