Home / 429,238,763.40-643,858,145.10-360,364,009.80

Finding the Fourth Proportional to 429,238,763.40, 643,858,145.10 and 360,364,009.80

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Solution

The fourth proportional to 429,238,763.40, 643,858,145.10 and 360,364,009.80 is: 540,546,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,238,763.40 : 643,858,145.10 = 360,364,009.80 : x
  2. Step 2: Convert to fraction form
    429,238,763.40/643,858,145.10 = 360,364,009.80/x
  3. Step 3: Cross multiply
    429,238,763.40x = 643,858,145.10 × 360,364,009.80
  4. Step 4: Simplify right side
    429,238,763.40x = 232,023,302,910,626,240
  5. Step 5: Solve for x
    x = 232,023,302,910,626,240/429,238,763.40
  6. Step 6: Final answer
    x = 540,546,014.70

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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.