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Finding the Fourth Proportional to 489,370.10, 734,055.15 and 340,070.90

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Solution

The fourth proportional to 489,370.10, 734,055.15 and 340,070.90 is: 510,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,370.10 : 734,055.15 = 340,070.90 : x
  2. Step 2: Convert to fraction form
    489,370.10/734,055.15 = 340,070.90/x
  3. Step 3: Cross multiply
    489,370.10x = 734,055.15 × 340,070.90
  4. Step 4: Simplify right side
    489,370.10x = 249,630,795,510.14
  5. Step 5: Solve for x
    x = 249,630,795,510.14/489,370.10
  6. Step 6: Final answer
    x = 510,106.35

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Similar ratio
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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.