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Finding the Fourth Proportional to 529,316.76, 730,448.28 and 287,603.04

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Solution

The fourth proportional to 529,316.76, 730,448.28 and 287,603.04 is: 396,887.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,316.76 : 730,448.28 = 287,603.04 : x
  2. Step 2: Convert to fraction form
    529,316.76/730,448.28 = 287,603.04/x
  3. Step 3: Cross multiply
    529,316.76x = 730,448.28 × 287,603.04
  4. Step 4: Simplify right side
    529,316.76x = 210,079,145,890.77
  5. Step 5: Solve for x
    x = 210,079,145,890.77/529,316.76
  6. Step 6: Final answer
    x = 396,887.39

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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.