Home / 28,492,236,680.40-42,738,355,020.60-21,053,763,291.60

Finding the Fourth Proportional to 28,492,236,680.40, 42,738,355,020.60 and 21,053,763,291.60

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Solution

The fourth proportional to 28,492,236,680.40, 42,738,355,020.60 and 21,053,763,291.60 is: 31,580,644,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,492,236,680.40 : 42,738,355,020.60 = 21,053,763,291.60 : x
  2. Step 2: Convert to fraction form
    28,492,236,680.40/42,738,355,020.60 = 21,053,763,291.60/x
  3. Step 3: Cross multiply
    28,492,236,680.40x = 42,738,355,020.60 × 21,053,763,291.60
  4. Step 4: Simplify right side
    28,492,236,680.40x = 899,803,210,076,076,769,280
  5. Step 5: Solve for x
    x = 899,803,210,076,076,769,280/28,492,236,680.40
  6. Step 6: Final answer
    x = 31,580,644,937.40

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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.