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Finding the Fourth Proportional to 526,005.68, 789,207.28 and 315,790.16

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Solution

The fourth proportional to 526,005.68, 789,207.28 and 315,790.16 is: 473,804.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,005.68 : 789,207.28 = 315,790.16 : x
  2. Step 2: Convert to fraction form
    526,005.68/789,207.28 = 315,790.16/x
  3. Step 3: Cross multiply
    526,005.68x = 789,207.28 × 315,790.16
  4. Step 4: Simplify right side
    526,005.68x = 249,223,893,224.37
  5. Step 5: Solve for x
    x = 249,223,893,224.37/526,005.68
  6. Step 6: Final answer
    x = 473,804.57

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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.