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Finding the Fourth Proportional to 478,803.02, 719,018.03 and 319,900.07

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Solution

The fourth proportional to 478,803.02, 719,018.03 and 319,900.07 is: 480,393.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,803.02 : 719,018.03 = 319,900.07 : x
  2. Step 2: Convert to fraction form
    478,803.02/719,018.03 = 319,900.07/x
  3. Step 3: Cross multiply
    478,803.02x = 719,018.03 × 319,900.07
  4. Step 4: Simplify right side
    478,803.02x = 230,013,918,326.31
  5. Step 5: Solve for x
    x = 230,013,918,326.31/478,803.02
  6. Step 6: Final answer
    x = 480,393.63

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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.