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Finding the Fourth Proportional to 540,246.89, 810,510.45 and 287,319.40

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Solution

The fourth proportional to 540,246.89, 810,510.45 and 287,319.40 is: 431,053.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,246.89 : 810,510.45 = 287,319.40 : x
  2. Step 2: Convert to fraction form
    540,246.89/810,510.45 = 287,319.40/x
  3. Step 3: Cross multiply
    540,246.89x = 810,510.45 × 287,319.40
  4. Step 4: Simplify right side
    540,246.89x = 232,875,374,161.45
  5. Step 5: Solve for x
    x = 232,875,374,161.45/540,246.89
  6. Step 6: Final answer
    x = 431,053.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.