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Finding the Fourth Proportional to 926,688, 1,278,820.80 and 524,280

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Solution

The fourth proportional to 926,688, 1,278,820.80 and 524,280 is: 723,501.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,688 : 1,278,820.80 = 524,280 : x
  2. Step 2: Convert to fraction form
    926,688/1,278,820.80 = 524,280/x
  3. Step 3: Cross multiply
    926,688x = 1,278,820.80 × 524,280
  4. Step 4: Simplify right side
    926,688x = 670,460,169,024
  5. Step 5: Solve for x
    x = 670,460,169,024/926,688
  6. Step 6: Final answer
    x = 723,501.51

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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.