Home / 808,779.40-1,213,946.70-409,870.60

Finding the Fourth Proportional to 808,779.40, 1,213,946.70 and 409,870.60

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Solution

The fourth proportional to 808,779.40, 1,213,946.70 and 409,870.60 is: 615,199.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,779.40 : 1,213,946.70 = 409,870.60 : x
  2. Step 2: Convert to fraction form
    808,779.40/1,213,946.70 = 409,870.60/x
  3. Step 3: Cross multiply
    808,779.40x = 1,213,946.70 × 409,870.60
  4. Step 4: Simplify right side
    808,779.40x = 497,561,062,297.02
  5. Step 5: Solve for x
    x = 497,561,062,297.02/808,779.40
  6. Step 6: Final answer
    x = 615,199.97

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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.