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Finding the Fourth Proportional to 556,848.88, 768,451.05 and 315,127.06

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Solution

The fourth proportional to 556,848.88, 768,451.05 and 315,127.06 is: 434,875.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,848.88 : 768,451.05 = 315,127.06 : x
  2. Step 2: Convert to fraction form
    556,848.88/768,451.05 = 315,127.06/x
  3. Step 3: Cross multiply
    556,848.88x = 768,451.05 × 315,127.06
  4. Step 4: Simplify right side
    556,848.88x = 242,159,718,219.29
  5. Step 5: Solve for x
    x = 242,159,718,219.29/556,848.88
  6. Step 6: Final answer
    x = 434,875.11

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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.