Home / 779,544.60-1,170,301.05-420,001.80

Finding the Fourth Proportional to 779,544.60, 1,170,301.05 and 420,001.80

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Solution

The fourth proportional to 779,544.60, 1,170,301.05 and 420,001.80 is: 630,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,544.60 : 1,170,301.05 = 420,001.80 : x
  2. Step 2: Convert to fraction form
    779,544.60/1,170,301.05 = 420,001.80/x
  3. Step 3: Cross multiply
    779,544.60x = 1,170,301.05 × 420,001.80
  4. Step 4: Simplify right side
    779,544.60x = 491,528,547,541.89
  5. Step 5: Solve for x
    x = 491,528,547,541.89/779,544.60
  6. Step 6: Final answer
    x = 630,532.94

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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.