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Finding the Fourth Proportional to 455,877.60, 628,752.40 and 425,320.16

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Solution

The fourth proportional to 455,877.60, 628,752.40 and 425,320.16 is: 586,607.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,877.60 : 628,752.40 = 425,320.16 : x
  2. Step 2: Convert to fraction form
    455,877.60/628,752.40 = 425,320.16/x
  3. Step 3: Cross multiply
    455,877.60x = 628,752.40 × 425,320.16
  4. Step 4: Simplify right side
    455,877.60x = 267,421,071,368.38
  5. Step 5: Solve for x
    x = 267,421,071,368.38/455,877.60
  6. Step 6: Final answer
    x = 586,607.18

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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.