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Finding the Fourth Proportional to 528,507.68, 729,336.89 and 286,784.10

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Solution

The fourth proportional to 528,507.68, 729,336.89 and 286,784.10 is: 395,760.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,507.68 : 729,336.89 = 286,784.10 : x
  2. Step 2: Convert to fraction form
    528,507.68/729,336.89 = 286,784.10/x
  3. Step 3: Cross multiply
    528,507.68x = 729,336.89 × 286,784.10
  4. Step 4: Simplify right side
    528,507.68x = 209,162,224,312.41
  5. Step 5: Solve for x
    x = 209,162,224,312.41/528,507.68
  6. Step 6: Final answer
    x = 395,760.05

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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.