Home / 628,968.79-867,950.87-342,488.19

Finding the Fourth Proportional to 628,968.79, 867,950.87 and 342,488.19

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Solution

The fourth proportional to 628,968.79, 867,950.87 and 342,488.19 is: 472,619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,968.79 : 867,950.87 = 342,488.19 : x
  2. Step 2: Convert to fraction form
    628,968.79/867,950.87 = 342,488.19/x
  3. Step 3: Cross multiply
    628,968.79x = 867,950.87 × 342,488.19
  4. Step 4: Simplify right side
    628,968.79x = 297,262,920,762.78
  5. Step 5: Solve for x
    x = 297,262,920,762.78/628,968.79
  6. Step 6: Final answer
    x = 472,619.51

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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.