Home / 921,347.84-1,271,461.24-513,440.76

Finding the Fourth Proportional to 921,347.84, 1,271,461.24 and 513,440.76

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Solution

The fourth proportional to 921,347.84, 1,271,461.24 and 513,440.76 is: 708,548.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,347.84 : 1,271,461.24 = 513,440.76 : x
  2. Step 2: Convert to fraction form
    921,347.84/1,271,461.24 = 513,440.76/x
  3. Step 3: Cross multiply
    921,347.84x = 1,271,461.24 × 513,440.76
  4. Step 4: Simplify right side
    921,347.84x = 652,820,025,376.14
  5. Step 5: Solve for x
    x = 652,820,025,376.14/921,347.84
  6. Step 6: Final answer
    x = 708,548.93

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Double scale
Find fourth proportional to 921,348.84, 1,271,462.62 and 513,441.76
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.