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Finding the Fourth Proportional to 623,155.40, 858,947.04 and 486,952.68

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Solution

The fourth proportional to 623,155.40, 858,947.04 and 486,952.68 is: 671,207.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,155.40 : 858,947.04 = 486,952.68 : x
  2. Step 2: Convert to fraction form
    623,155.40/858,947.04 = 486,952.68/x
  3. Step 3: Cross multiply
    623,155.40x = 858,947.04 × 486,952.68
  4. Step 4: Simplify right side
    623,155.40x = 418,266,563,106.07
  5. Step 5: Solve for x
    x = 418,266,563,106.07/623,155.40
  6. Step 6: Final answer
    x = 671,207.48

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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.