Home / 928,088.76-1,280,868.48-520,300.56

Finding the Fourth Proportional to 928,088.76, 1,280,868.48 and 520,300.56

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Solution

The fourth proportional to 928,088.76, 1,280,868.48 and 520,300.56 is: 718,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,088.76 : 1,280,868.48 = 520,300.56 : x
  2. Step 2: Convert to fraction form
    928,088.76/1,280,868.48 = 520,300.56/x
  3. Step 3: Cross multiply
    928,088.76x = 1,280,868.48 × 520,300.56
  4. Step 4: Simplify right side
    928,088.76x = 666,436,587,430.35
  5. Step 5: Solve for x
    x = 666,436,587,430.35/928,088.76
  6. Step 6: Final answer
    x = 718,074.19

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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.