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Finding the Fourth Proportional to 675,158.24, 931,810.48 and 388,671.20

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Solution

The fourth proportional to 675,158.24, 931,810.48 and 388,671.20 is: 536,419.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,158.24 : 931,810.48 = 388,671.20 : x
  2. Step 2: Convert to fraction form
    675,158.24/931,810.48 = 388,671.20/x
  3. Step 3: Cross multiply
    675,158.24x = 931,810.48 × 388,671.20
  4. Step 4: Simplify right side
    675,158.24x = 362,167,897,434.18
  5. Step 5: Solve for x
    x = 362,167,897,434.18/675,158.24
  6. Step 6: Final answer
    x = 536,419.28

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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.