Home / 522,031,307.64-720,421,705.98-287,100,137.76

Finding the Fourth Proportional to 522,031,307.64, 720,421,705.98 and 287,100,137.76

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Solution

The fourth proportional to 522,031,307.64, 720,421,705.98 and 287,100,137.76 is: 396,208,365.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,031,307.64 : 720,421,705.98 = 287,100,137.76 : x
  2. Step 2: Convert to fraction form
    522,031,307.64/720,421,705.98 = 287,100,137.76/x
  3. Step 3: Cross multiply
    522,031,307.64x = 720,421,705.98 × 287,100,137.76
  4. Step 4: Simplify right side
    522,031,307.64x = 206,833,171,032,152,224
  5. Step 5: Solve for x
    x = 206,833,171,032,152,224/522,031,307.64
  6. Step 6: Final answer
    x = 396,208,365.29

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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.