Home / 918,720.25-1,378,264.32-514,487.32

Finding the Fourth Proportional to 918,720.25, 1,378,264.32 and 514,487.32

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Solution

The fourth proportional to 918,720.25, 1,378,264.32 and 514,487.32 is: 771,833.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,720.25 : 1,378,264.32 = 514,487.32 : x
  2. Step 2: Convert to fraction form
    918,720.25/1,378,264.32 = 514,487.32/x
  3. Step 3: Cross multiply
    918,720.25x = 1,378,264.32 × 514,487.32
  4. Step 4: Simplify right side
    918,720.25x = 709,099,509,357.10
  5. Step 5: Solve for x
    x = 709,099,509,357.10/918,720.25
  6. Step 6: Final answer
    x = 771,833.98

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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.