Home / 399,178,814.40-598,768,221.60-291,683,390.40

Finding the Fourth Proportional to 399,178,814.40, 598,768,221.60 and 291,683,390.40

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Solution

The fourth proportional to 399,178,814.40, 598,768,221.60 and 291,683,390.40 is: 437,525,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,178,814.40 : 598,768,221.60 = 291,683,390.40 : x
  2. Step 2: Convert to fraction form
    399,178,814.40/598,768,221.60 = 291,683,390.40/x
  3. Step 3: Cross multiply
    399,178,814.40x = 598,768,221.60 × 291,683,390.40
  4. Step 4: Simplify right side
    399,178,814.40x = 174,650,744,940,066,496
  5. Step 5: Solve for x
    x = 174,650,744,940,066,496/399,178,814.40
  6. Step 6: Final answer
    x = 437,525,085.60

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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.