Home / 742,065.13-1,113,629.15-315,899.74

Finding the Fourth Proportional to 742,065.13, 1,113,629.15 and 315,899.74

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Solution

The fourth proportional to 742,065.13, 1,113,629.15 and 315,899.74 is: 474,075.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,065.13 : 1,113,629.15 = 315,899.74 : x
  2. Step 2: Convert to fraction form
    742,065.13/1,113,629.15 = 315,899.74/x
  3. Step 3: Cross multiply
    742,065.13x = 1,113,629.15 × 315,899.74
  4. Step 4: Simplify right side
    742,065.13x = 351,795,158,941.42
  5. Step 5: Solve for x
    x = 351,795,158,941.42/742,065.13
  6. Step 6: Final answer
    x = 474,075.85

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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.