Home / 897,782.96-1,238,970.35-489,907.18

Finding the Fourth Proportional to 897,782.96, 1,238,970.35 and 489,907.18

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Solution

The fourth proportional to 897,782.96, 1,238,970.35 and 489,907.18 is: 676,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,782.96 : 1,238,970.35 = 489,907.18 : x
  2. Step 2: Convert to fraction form
    897,782.96/1,238,970.35 = 489,907.18/x
  3. Step 3: Cross multiply
    897,782.96x = 1,238,970.35 × 489,907.18
  4. Step 4: Simplify right side
    897,782.96x = 606,980,468,399.46
  5. Step 5: Solve for x
    x = 606,980,468,399.46/897,782.96
  6. Step 6: Final answer
    x = 676,088.20

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Double scale
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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.