Home / 1,320,310.32-1,980,444.21-421,746.13

Finding the Fourth Proportional to 1,320,310.32, 1,980,444.21 and 421,746.13

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Solution

The fourth proportional to 1,320,310.32, 1,980,444.21 and 421,746.13 is: 632,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,310.32 : 1,980,444.21 = 421,746.13 : x
  2. Step 2: Convert to fraction form
    1,320,310.32/1,980,444.21 = 421,746.13/x
  3. Step 3: Cross multiply
    1,320,310.32x = 1,980,444.21 × 421,746.13
  4. Step 4: Simplify right side
    1,320,310.32x = 835,244,681,248.41
  5. Step 5: Solve for x
    x = 835,244,681,248.41/1,320,310.32
  6. Step 6: Final answer
    x = 632,612.40

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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.