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Finding the Fourth Proportional to 425,075.90, 586,646.19 and 317,459.12

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Solution

The fourth proportional to 425,075.90, 586,646.19 and 317,459.12 is: 438,124.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,075.90 : 586,646.19 = 317,459.12 : x
  2. Step 2: Convert to fraction form
    425,075.90/586,646.19 = 317,459.12/x
  3. Step 3: Cross multiply
    425,075.90x = 586,646.19 × 317,459.12
  4. Step 4: Simplify right side
    425,075.90x = 186,236,180,295.52
  5. Step 5: Solve for x
    x = 186,236,180,295.52/425,075.90
  6. Step 6: Final answer
    x = 438,124.54

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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.