Home / 921,333.94-1,271,423.56-513,426.80

Finding the Fourth Proportional to 921,333.94, 1,271,423.56 and 513,426.80

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Solution

The fourth proportional to 921,333.94, 1,271,423.56 and 513,426.80 is: 708,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,333.94 : 1,271,423.56 = 513,426.80 : x
  2. Step 2: Convert to fraction form
    921,333.94/1,271,423.56 = 513,426.80/x
  3. Step 3: Cross multiply
    921,333.94x = 1,271,423.56 × 513,426.80
  4. Step 4: Simplify right side
    921,333.94x = 652,782,920,931.16
  5. Step 5: Solve for x
    x = 652,782,920,931.16/921,333.94
  6. Step 6: Final answer
    x = 708,519.35

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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.