Home / 779,612.14-1,075,864.80-421,916.14

Finding the Fourth Proportional to 779,612.14, 1,075,864.80 and 421,916.14

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Solution

The fourth proportional to 779,612.14, 1,075,864.80 and 421,916.14 is: 582,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,612.14 : 1,075,864.80 = 421,916.14 : x
  2. Step 2: Convert to fraction form
    779,612.14/1,075,864.80 = 421,916.14/x
  3. Step 3: Cross multiply
    779,612.14x = 1,075,864.80 × 421,916.14
  4. Step 4: Simplify right side
    779,612.14x = 453,924,723,577.87
  5. Step 5: Solve for x
    x = 453,924,723,577.87/779,612.14
  6. Step 6: Final answer
    x = 582,244.30

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1.5x scale

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.