Home / 652,128.40-977,026.20-402,518.80

Finding the Fourth Proportional to 652,128.40, 977,026.20 and 402,518.80

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Solution

The fourth proportional to 652,128.40, 977,026.20 and 402,518.80 is: 603,058.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,128.40 : 977,026.20 = 402,518.80 : x
  2. Step 2: Convert to fraction form
    652,128.40/977,026.20 = 402,518.80/x
  3. Step 3: Cross multiply
    652,128.40x = 977,026.20 × 402,518.80
  4. Step 4: Simplify right side
    652,128.40x = 393,271,413,592.56
  5. Step 5: Solve for x
    x = 393,271,413,592.56/652,128.40
  6. Step 6: Final answer
    x = 603,058.25

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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.