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Finding the Fourth Proportional to 709,466.30, 979,085.12 and 403,587

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Solution

The fourth proportional to 709,466.30, 979,085.12 and 403,587 is: 556,962.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,466.30 : 979,085.12 = 403,587 : x
  2. Step 2: Convert to fraction form
    709,466.30/979,085.12 = 403,587/x
  3. Step 3: Cross multiply
    709,466.30x = 979,085.12 × 403,587
  4. Step 4: Simplify right side
    709,466.30x = 395,146,024,307.51
  5. Step 5: Solve for x
    x = 395,146,024,307.51/709,466.30
  6. Step 6: Final answer
    x = 556,962.36

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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.