Home / 921,349.84-1,271,464-513,442.76

Finding the Fourth Proportional to 921,349.84, 1,271,464 and 513,442.76

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Solution

The fourth proportional to 921,349.84, 1,271,464 and 513,442.76 is: 708,551.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,349.84 : 1,271,464 = 513,442.76 : x
  2. Step 2: Convert to fraction form
    921,349.84/1,271,464 = 513,442.76/x
  3. Step 3: Cross multiply
    921,349.84x = 1,271,464 × 513,442.76
  4. Step 4: Simplify right side
    921,349.84x = 652,823,985,400.64
  5. Step 5: Solve for x
    x = 652,823,985,400.64/921,349.84
  6. Step 6: Final answer
    x = 708,551.69

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.