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Finding the Fourth Proportional to 708,068.56, 977,125.64 and 385,792.08

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Solution

The fourth proportional to 708,068.56, 977,125.64 and 385,792.08 is: 532,388.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,068.56 : 977,125.64 = 385,792.08 : x
  2. Step 2: Convert to fraction form
    708,068.56/977,125.64 = 385,792.08/x
  3. Step 3: Cross multiply
    708,068.56x = 977,125.64 × 385,792.08
  4. Step 4: Simplify right side
    708,068.56x = 376,967,333,076.93
  5. Step 5: Solve for x
    x = 376,967,333,076.93/708,068.56
  6. Step 6: Final answer
    x = 532,388.18

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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.