Home / 761,401.62-1,050,734.16-455,490.90

Finding the Fourth Proportional to 761,401.62, 1,050,734.16 and 455,490.90

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Solution

The fourth proportional to 761,401.62, 1,050,734.16 and 455,490.90 is: 628,577.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,401.62 : 1,050,734.16 = 455,490.90 : x
  2. Step 2: Convert to fraction form
    761,401.62/1,050,734.16 = 455,490.90/x
  3. Step 3: Cross multiply
    761,401.62x = 1,050,734.16 × 455,490.90
  4. Step 4: Simplify right side
    761,401.62x = 478,599,848,199.14
  5. Step 5: Solve for x
    x = 478,599,848,199.14/761,401.62
  6. Step 6: Final answer
    x = 628,577.40

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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.