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Finding the Fourth Proportional to 501,496.78, 692,065.55 and 286,641.46

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Solution

The fourth proportional to 501,496.78, 692,065.55 and 286,641.46 is: 395,565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,496.78 : 692,065.55 = 286,641.46 : x
  2. Step 2: Convert to fraction form
    501,496.78/692,065.55 = 286,641.46/x
  3. Step 3: Cross multiply
    501,496.78x = 692,065.55 × 286,641.46
  4. Step 4: Simplify right side
    501,496.78x = 198,374,676,207.38
  5. Step 5: Solve for x
    x = 198,374,676,207.38/501,496.78
  6. Step 6: Final answer
    x = 395,565.21

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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.