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Finding the Fourth Proportional to 615,409.80, 849,715.59 and 397,747.35

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Solution

The fourth proportional to 615,409.80, 849,715.59 and 397,747.35 is: 549,182.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,409.80 : 849,715.59 = 397,747.35 : x
  2. Step 2: Convert to fraction form
    615,409.80/849,715.59 = 397,747.35/x
  3. Step 3: Cross multiply
    615,409.80x = 849,715.59 × 397,747.35
  4. Step 4: Simplify right side
    615,409.80x = 337,972,124,176.19
  5. Step 5: Solve for x
    x = 337,972,124,176.19/615,409.80
  6. Step 6: Final answer
    x = 549,182.23

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1.5x scale

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.