Home / 898,360.40-1,239,718.02-490,442.37

Finding the Fourth Proportional to 898,360.40, 1,239,718.02 and 490,442.37

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Solution

The fourth proportional to 898,360.40, 1,239,718.02 and 490,442.37 is: 676,799.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,360.40 : 1,239,718.02 = 490,442.37 : x
  2. Step 2: Convert to fraction form
    898,360.40/1,239,718.02 = 490,442.37/x
  3. Step 3: Cross multiply
    898,360.40x = 1,239,718.02 × 490,442.37
  4. Step 4: Simplify right side
    898,360.40x = 608,010,243,860.51
  5. Step 5: Solve for x
    x = 608,010,243,860.51/898,360.40
  6. Step 6: Final answer
    x = 676,799.92

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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.