Home / 802,128.40-1,202,803.80-446,765.20

Finding the Fourth Proportional to 802,128.40, 1,202,803.80 and 446,765.20

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Solution

The fourth proportional to 802,128.40, 1,202,803.80 and 446,765.20 is: 669,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,128.40 : 1,202,803.80 = 446,765.20 : x
  2. Step 2: Convert to fraction form
    802,128.40/1,202,803.80 = 446,765.20/x
  3. Step 3: Cross multiply
    802,128.40x = 1,202,803.80 × 446,765.20
  4. Step 4: Simplify right side
    802,128.40x = 537,370,880,267.76
  5. Step 5: Solve for x
    x = 537,370,880,267.76/802,128.40
  6. Step 6: Final answer
    x = 669,931.25

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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.