Home / 926,686.36-1,390,327.62-421,427.80

Finding the Fourth Proportional to 926,686.36, 1,390,327.62 and 421,427.80

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Solution

The fourth proportional to 926,686.36, 1,390,327.62 and 421,427.80 is: 632,277.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,686.36 : 1,390,327.62 = 421,427.80 : x
  2. Step 2: Convert to fraction form
    926,686.36/1,390,327.62 = 421,427.80/x
  3. Step 3: Cross multiply
    926,686.36x = 1,390,327.62 × 421,427.80
  4. Step 4: Simplify right side
    926,686.36x = 585,922,710,175.84
  5. Step 5: Solve for x
    x = 585,922,710,175.84/926,686.36
  6. Step 6: Final answer
    x = 632,277.26

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1.5x scale

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.