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Finding the Fourth Proportional to 607,781.10, 912,492.45 and 355,320.30

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Solution

The fourth proportional to 607,781.10, 912,492.45 and 355,320.30 is: 533,460.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,781.10 : 912,492.45 = 355,320.30 : x
  2. Step 2: Convert to fraction form
    607,781.10/912,492.45 = 355,320.30/x
  3. Step 3: Cross multiply
    607,781.10x = 912,492.45 × 355,320.30
  4. Step 4: Simplify right side
    607,781.10x = 324,227,091,081.74
  5. Step 5: Solve for x
    x = 324,227,091,081.74/607,781.10
  6. Step 6: Final answer
    x = 533,460.31

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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.