Home / 829,081.60-1,242,700.80-355,686.40

Finding the Fourth Proportional to 829,081.60, 1,242,700.80 and 355,686.40

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Solution

The fourth proportional to 829,081.60, 1,242,700.80 and 355,686.40 is: 533,134.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,081.60 : 1,242,700.80 = 355,686.40 : x
  2. Step 2: Convert to fraction form
    829,081.60/1,242,700.80 = 355,686.40/x
  3. Step 3: Cross multiply
    829,081.60x = 1,242,700.80 × 355,686.40
  4. Step 4: Simplify right side
    829,081.60x = 442,011,773,829.12
  5. Step 5: Solve for x
    x = 442,011,773,829.12/829,081.60
  6. Step 6: Final answer
    x = 533,134.22

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1.5x scale

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.