Home / 628,756.02-867,683.30-342,278.19

Finding the Fourth Proportional to 628,756.02, 867,683.30 and 342,278.19

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Solution

The fourth proportional to 628,756.02, 867,683.30 and 342,278.19 is: 472,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,756.02 : 867,683.30 = 342,278.19 : x
  2. Step 2: Convert to fraction form
    628,756.02/867,683.30 = 342,278.19/x
  3. Step 3: Cross multiply
    628,756.02x = 867,683.30 × 342,278.19
  4. Step 4: Simplify right side
    628,756.02x = 296,989,067,705.84
  5. Step 5: Solve for x
    x = 296,989,067,705.84/628,756.02
  6. Step 6: Final answer
    x = 472,343.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.