Home / 920,962.99-1,270,929.63-513,065.78

Finding the Fourth Proportional to 920,962.99, 1,270,929.63 and 513,065.78

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Solution

The fourth proportional to 920,962.99, 1,270,929.63 and 513,065.78 is: 708,031.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,962.99 : 1,270,929.63 = 513,065.78 : x
  2. Step 2: Convert to fraction form
    920,962.99/1,270,929.63 = 513,065.78/x
  3. Step 3: Cross multiply
    920,962.99x = 1,270,929.63 × 513,065.78
  4. Step 4: Simplify right side
    920,962.99x = 652,070,509,425.38
  5. Step 5: Solve for x
    x = 652,070,509,425.38/920,962.99
  6. Step 6: Final answer
    x = 708,031.18

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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.