Home / 419,502,875.91-578,916,442.95-243,395,731.23

Finding the Fourth Proportional to 419,502,875.91, 578,916,442.95 and 243,395,731.23

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Solution

The fourth proportional to 419,502,875.91, 578,916,442.95 and 243,395,731.23 is: 335,887,544.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,502,875.91 : 578,916,442.95 = 243,395,731.23 : x
  2. Step 2: Convert to fraction form
    419,502,875.91/578,916,442.95 = 243,395,731.23/x
  3. Step 3: Cross multiply
    419,502,875.91x = 578,916,442.95 × 243,395,731.23
  4. Step 4: Simplify right side
    419,502,875.91x = 140,905,790,952,885,840
  5. Step 5: Solve for x
    x = 140,905,790,952,885,840/419,502,875.91
  6. Step 6: Final answer
    x = 335,887,544.63

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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.