Home / 779,483.25-1,075,690.13-421,787.25

Finding the Fourth Proportional to 779,483.25, 1,075,690.13 and 421,787.25

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Solution

The fourth proportional to 779,483.25, 1,075,690.13 and 421,787.25 is: 582,068.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,483.25 : 1,075,690.13 = 421,787.25 : x
  2. Step 2: Convert to fraction form
    779,483.25/1,075,690.13 = 421,787.25/x
  3. Step 3: Cross multiply
    779,483.25x = 1,075,690.13 × 421,787.25
  4. Step 4: Simplify right side
    779,483.25x = 453,712,379,675.91
  5. Step 5: Solve for x
    x = 453,712,379,675.91/779,483.25
  6. Step 6: Final answer
    x = 582,068.16

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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.