Home / 761,438.68-1,050,749.31-455,683.29

Finding the Fourth Proportional to 761,438.68, 1,050,749.31 and 455,683.29

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Solution

The fourth proportional to 761,438.68, 1,050,749.31 and 455,683.29 is: 628,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,438.68 : 1,050,749.31 = 455,683.29 : x
  2. Step 2: Convert to fraction form
    761,438.68/1,050,749.31 = 455,683.29/x
  3. Step 3: Cross multiply
    761,438.68x = 1,050,749.31 × 455,683.29
  4. Step 4: Simplify right side
    761,438.68x = 478,808,900,314.53
  5. Step 5: Solve for x
    x = 478,808,900,314.53/761,438.68
  6. Step 6: Final answer
    x = 628,821.35

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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.