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Finding the Fourth Proportional to 570,866,848.40, 856,300,272.60 and 398,679,964.40

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Solution

The fourth proportional to 570,866,848.40, 856,300,272.60 and 398,679,964.40 is: 598,019,946.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,866,848.40 : 856,300,272.60 = 398,679,964.40 : x
  2. Step 2: Convert to fraction form
    570,866,848.40/856,300,272.60 = 398,679,964.40/x
  3. Step 3: Cross multiply
    570,866,848.40x = 856,300,272.60 × 398,679,964.40
  4. Step 4: Simplify right side
    570,866,848.40x = 341,389,762,195,878,272
  5. Step 5: Solve for x
    x = 341,389,762,195,878,272/570,866,848.40
  6. Step 6: Final answer
    x = 598,019,946.60

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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.