Home / 779,108.16-1,075,168.80-421,412.16

Finding the Fourth Proportional to 779,108.16, 1,075,168.80 and 421,412.16

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Solution

The fourth proportional to 779,108.16, 1,075,168.80 and 421,412.16 is: 581,548.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,108.16 : 1,075,168.80 = 421,412.16 : x
  2. Step 2: Convert to fraction form
    779,108.16/1,075,168.80 = 421,412.16/x
  3. Step 3: Cross multiply
    779,108.16x = 1,075,168.80 × 421,412.16
  4. Step 4: Simplify right side
    779,108.16x = 453,089,206,372.61
  5. Step 5: Solve for x
    x = 453,089,206,372.61/779,108.16
  6. Step 6: Final answer
    x = 581,548.53

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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.