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Finding the Fourth Proportional to 559,655.48, 839,475.40 and 319,256.34

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Solution

The fourth proportional to 559,655.48, 839,475.40 and 319,256.34 is: 478,880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,655.48 : 839,475.40 = 319,256.34 : x
  2. Step 2: Convert to fraction form
    559,655.48/839,475.40 = 319,256.34/x
  3. Step 3: Cross multiply
    559,655.48x = 839,475.40 × 319,256.34
  4. Step 4: Simplify right side
    559,655.48x = 268,007,840,376.47
  5. Step 5: Solve for x
    x = 268,007,840,376.47/559,655.48
  6. Step 6: Final answer
    x = 478,880.05

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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.