Home / 989,781.02-1,484,533.29-421,389.98

Finding the Fourth Proportional to 989,781.02, 1,484,533.29 and 421,389.98

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Solution

The fourth proportional to 989,781.02, 1,484,533.29 and 421,389.98 is: 632,026.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,781.02 : 1,484,533.29 = 421,389.98 : x
  2. Step 2: Convert to fraction form
    989,781.02/1,484,533.29 = 421,389.98/x
  3. Step 3: Cross multiply
    989,781.02x = 1,484,533.29 × 421,389.98
  4. Step 4: Simplify right side
    989,781.02x = 625,567,453,382.43
  5. Step 5: Solve for x
    x = 625,567,453,382.43/989,781.02
  6. Step 6: Final answer
    x = 632,026.12

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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.