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Finding the Fourth Proportional to 607,603.20, 911,404.80 and 578,078.70

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Solution

The fourth proportional to 607,603.20, 911,404.80 and 578,078.70 is: 867,118.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,603.20 : 911,404.80 = 578,078.70 : x
  2. Step 2: Convert to fraction form
    607,603.20/911,404.80 = 578,078.70/x
  3. Step 3: Cross multiply
    607,603.20x = 911,404.80 × 578,078.70
  4. Step 4: Simplify right side
    607,603.20x = 526,863,701,957.76
  5. Step 5: Solve for x
    x = 526,863,701,957.76/607,603.20
  6. Step 6: Final answer
    x = 867,118.05

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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.