Home / 603,905.40-904,821.30-287,681.40

Finding the Fourth Proportional to 603,905.40, 904,821.30 and 287,681.40

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Solution

The fourth proportional to 603,905.40, 904,821.30 and 287,681.40 is: 431,028.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,905.40 : 904,821.30 = 287,681.40 : x
  2. Step 2: Convert to fraction form
    603,905.40/904,821.30 = 287,681.40/x
  3. Step 3: Cross multiply
    603,905.40x = 904,821.30 × 287,681.40
  4. Step 4: Simplify right side
    603,905.40x = 260,300,258,333.82
  5. Step 5: Solve for x
    x = 260,300,258,333.82/603,905.40
  6. Step 6: Final answer
    x = 431,028.20

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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.