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Finding the Fourth Proportional to 613,498.60, 920,779.56 and 612,080.08

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Solution

The fourth proportional to 613,498.60, 920,779.56 and 612,080.08 is: 918,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,498.60 : 920,779.56 = 612,080.08 : x
  2. Step 2: Convert to fraction form
    613,498.60/920,779.56 = 612,080.08/x
  3. Step 3: Cross multiply
    613,498.60x = 920,779.56 × 612,080.08
  4. Step 4: Simplify right side
    613,498.60x = 563,590,826,747.17
  5. Step 5: Solve for x
    x = 563,590,826,747.17/613,498.60
  6. Step 6: Final answer
    x = 918,650.55

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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.