Home / 749,611.80-1,124,417.70-434,878.20

Finding the Fourth Proportional to 749,611.80, 1,124,417.70 and 434,878.20

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Solution

The fourth proportional to 749,611.80, 1,124,417.70 and 434,878.20 is: 652,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,611.80 : 1,124,417.70 = 434,878.20 : x
  2. Step 2: Convert to fraction form
    749,611.80/1,124,417.70 = 434,878.20/x
  3. Step 3: Cross multiply
    749,611.80x = 1,124,417.70 × 434,878.20
  4. Step 4: Simplify right side
    749,611.80x = 488,984,745,424.14
  5. Step 5: Solve for x
    x = 488,984,745,424.14/749,611.80
  6. Step 6: Final answer
    x = 652,317.30

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Double scale
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Similar ratio
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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.