Home / 720,878.51-1,081,482.01-383,741.53

Finding the Fourth Proportional to 720,878.51, 1,081,482.01 and 383,741.53

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Solution

The fourth proportional to 720,878.51, 1,081,482.01 and 383,741.53 is: 575,699.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,878.51 : 1,081,482.01 = 383,741.53 : x
  2. Step 2: Convert to fraction form
    720,878.51/1,081,482.01 = 383,741.53/x
  3. Step 3: Cross multiply
    720,878.51x = 1,081,482.01 × 383,741.53
  4. Step 4: Simplify right side
    720,878.51x = 415,009,557,521.82
  5. Step 5: Solve for x
    x = 415,009,557,521.82/720,878.51
  6. Step 6: Final answer
    x = 575,699.72

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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.