Home / 876,848.40-1,209,929.40-489,616.56

Finding the Fourth Proportional to 876,848.40, 1,209,929.40 and 489,616.56

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Solution

The fourth proportional to 876,848.40, 1,209,929.40 and 489,616.56 is: 675,603.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,848.40 : 1,209,929.40 = 489,616.56 : x
  2. Step 2: Convert to fraction form
    876,848.40/1,209,929.40 = 489,616.56/x
  3. Step 3: Cross multiply
    876,848.40x = 1,209,929.40 × 489,616.56
  4. Step 4: Simplify right side
    876,848.40x = 592,401,470,670.86
  5. Step 5: Solve for x
    x = 592,401,470,670.86/876,848.40
  6. Step 6: Final answer
    x = 675,603.07

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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.