Home / 779,820.68-1,076,031.20-440,281.64

Finding the Fourth Proportional to 779,820.68, 1,076,031.20 and 440,281.64

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Solution

The fourth proportional to 779,820.68, 1,076,031.20 and 440,281.64 is: 607,520.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,820.68 : 1,076,031.20 = 440,281.64 : x
  2. Step 2: Convert to fraction form
    779,820.68/1,076,031.20 = 440,281.64/x
  3. Step 3: Cross multiply
    779,820.68x = 1,076,031.20 × 440,281.64
  4. Step 4: Simplify right side
    779,820.68x = 473,756,785,217.95
  5. Step 5: Solve for x
    x = 473,756,785,217.95/779,820.68
  6. Step 6: Final answer
    x = 607,520.16

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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.