Home / 687,430.02-1,030,898.94-238,030.20

Finding the Fourth Proportional to 687,430.02, 1,030,898.94 and 238,030.20

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Solution

The fourth proportional to 687,430.02, 1,030,898.94 and 238,030.20 is: 356,960.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,430.02 : 1,030,898.94 = 238,030.20 : x
  2. Step 2: Convert to fraction form
    687,430.02/1,030,898.94 = 238,030.20/x
  3. Step 3: Cross multiply
    687,430.02x = 1,030,898.94 × 238,030.20
  4. Step 4: Simplify right side
    687,430.02x = 245,385,080,867.99
  5. Step 5: Solve for x
    x = 245,385,080,867.99/687,430.02
  6. Step 6: Final answer
    x = 356,960.09

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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.