Home / 528,849.61-729,808.18-287,127.38

Finding the Fourth Proportional to 528,849.61, 729,808.18 and 287,127.38

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Solution

The fourth proportional to 528,849.61, 729,808.18 and 287,127.38 is: 396,233.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,849.61 : 729,808.18 = 287,127.38 : x
  2. Step 2: Convert to fraction form
    528,849.61/729,808.18 = 287,127.38/x
  3. Step 3: Cross multiply
    528,849.61x = 729,808.18 × 287,127.38
  4. Step 4: Simplify right side
    528,849.61x = 209,547,911,732.67
  5. Step 5: Solve for x
    x = 209,547,911,732.67/528,849.61
  6. Step 6: Final answer
    x = 396,233.46

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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.