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Finding the Fourth Proportional to 765,782.40, 1,148,810.40 and 260,316.82

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Solution

The fourth proportional to 765,782.40, 1,148,810.40 and 260,316.82 is: 390,521.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,782.40 : 1,148,810.40 = 260,316.82 : x
  2. Step 2: Convert to fraction form
    765,782.40/1,148,810.40 = 260,316.82/x
  3. Step 3: Cross multiply
    765,782.40x = 1,148,810.40 × 260,316.82
  4. Step 4: Simplify right side
    765,782.40x = 299,054,670,110.93
  5. Step 5: Solve for x
    x = 299,054,670,110.93/765,782.40
  6. Step 6: Final answer
    x = 390,521.73

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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.