Home / 785,485.60-1,178,228.40-286,784.80

Finding the Fourth Proportional to 785,485.60, 1,178,228.40 and 286,784.80

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Solution

The fourth proportional to 785,485.60, 1,178,228.40 and 286,784.80 is: 430,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,485.60 : 1,178,228.40 = 286,784.80 : x
  2. Step 2: Convert to fraction form
    785,485.60/1,178,228.40 = 286,784.80/x
  3. Step 3: Cross multiply
    785,485.60x = 1,178,228.40 × 286,784.80
  4. Step 4: Simplify right side
    785,485.60x = 337,897,996,048.32
  5. Step 5: Solve for x
    x = 337,897,996,048.32/785,485.60
  6. Step 6: Final answer
    x = 430,177.20

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Double scale
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Similar ratio
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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.