Home / 897,783.12-1,238,970.58-489,907.35

Finding the Fourth Proportional to 897,783.12, 1,238,970.58 and 489,907.35

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Solution

The fourth proportional to 897,783.12, 1,238,970.58 and 489,907.35 is: 676,088.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,783.12 : 1,238,970.58 = 489,907.35 : x
  2. Step 2: Convert to fraction form
    897,783.12/1,238,970.58 = 489,907.35/x
  3. Step 3: Cross multiply
    897,783.12x = 1,238,970.58 × 489,907.35
  4. Step 4: Simplify right side
    897,783.12x = 606,980,793,575.76
  5. Step 5: Solve for x
    x = 606,980,793,575.76/897,783.12
  6. Step 6: Final answer
    x = 676,088.45

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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.