Home / 612,756.10-845,583.12-340,816.30

Finding the Fourth Proportional to 612,756.10, 845,583.12 and 340,816.30

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Solution

The fourth proportional to 612,756.10, 845,583.12 and 340,816.30 is: 470,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,756.10 : 845,583.12 = 340,816.30 : x
  2. Step 2: Convert to fraction form
    612,756.10/845,583.12 = 340,816.30/x
  3. Step 3: Cross multiply
    612,756.10x = 845,583.12 × 340,816.30
  4. Step 4: Simplify right side
    612,756.10x = 288,188,510,300.86
  5. Step 5: Solve for x
    x = 288,188,510,300.86/612,756.10
  6. Step 6: Final answer
    x = 470,315.20

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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.