Home / 645,234,116,626.90-967,374,034,782.65-390,206,803,238.53

Finding the Fourth Proportional to 645,234,116,626.90, 967,374,034,782.65 and 390,206,803,238.53

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Solution

The fourth proportional to 645,234,116,626.90, 967,374,034,782.65 and 390,206,803,238.53 is: 585,021,653,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,234,116,626.90 : 967,374,034,782.65 = 390,206,803,238.53 : x
  2. Step 2: Convert to fraction form
    645,234,116,626.90/967,374,034,782.65 = 390,206,803,238.53/x
  3. Step 3: Cross multiply
    645,234,116,626.90x = 967,374,034,782.65 × 390,206,803,238.53
  4. Step 4: Simplify right side
    645,234,116,626.90x = 377,475,929,648,496,432,381,952
  5. Step 5: Solve for x
    x = 377,475,929,648,496,432,381,952/645,234,116,626.90
  6. Step 6: Final answer
    x = 585,021,653,259.49

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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.