Home / 391,140,586,999.90-586,710,880,499.85-139,885,485,867.10

Finding the Fourth Proportional to 391,140,586,999.90, 586,710,880,499.85 and 139,885,485,867.10

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Solution

The fourth proportional to 391,140,586,999.90, 586,710,880,499.85 and 139,885,485,867.10 is: 209,828,228,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,140,586,999.90 : 586,710,880,499.85 = 139,885,485,867.10 : x
  2. Step 2: Convert to fraction form
    391,140,586,999.90/586,710,880,499.85 = 139,885,485,867.10/x
  3. Step 3: Cross multiply
    391,140,586,999.90x = 586,710,880,499.85 × 139,885,485,867.10
  4. Step 4: Simplify right side
    391,140,586,999.90x = 82,072,336,582,235,566,112,768
  5. Step 5: Solve for x
    x = 82,072,336,582,235,566,112,768/391,140,586,999.90
  6. Step 6: Final answer
    x = 209,828,228,800.65

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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.