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Finding the Fourth Proportional to 978,444.36, 1,350,312.12 and 548,749.89

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Solution

The fourth proportional to 978,444.36, 1,350,312.12 and 548,749.89 is: 757,307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,444.36 : 1,350,312.12 = 548,749.89 : x
  2. Step 2: Convert to fraction form
    978,444.36/1,350,312.12 = 548,749.89/x
  3. Step 3: Cross multiply
    978,444.36x = 1,350,312.12 × 548,749.89
  4. Step 4: Simplify right side
    978,444.36x = 740,983,627,315.67
  5. Step 5: Solve for x
    x = 740,983,627,315.67/978,444.36
  6. Step 6: Final answer
    x = 757,307.88

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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.