Home / 528,510.68-729,341.03-286,787.10

Finding the Fourth Proportional to 528,510.68, 729,341.03 and 286,787.10

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Solution

The fourth proportional to 528,510.68, 729,341.03 and 286,787.10 is: 395,764.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,510.68 : 729,341.03 = 286,787.10 : x
  2. Step 2: Convert to fraction form
    528,510.68/729,341.03 = 286,787.10/x
  3. Step 3: Cross multiply
    528,510.68x = 729,341.03 × 286,787.10
  4. Step 4: Simplify right side
    528,510.68x = 209,165,598,904.71
  5. Step 5: Solve for x
    x = 209,165,598,904.71/528,510.68
  6. Step 6: Final answer
    x = 395,764.19

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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.