Home / 890,313,047.85-1,228,628,070.18-508,828,718.40

Finding the Fourth Proportional to 890,313,047.85, 1,228,628,070.18 and 508,828,718.40

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Solution

The fourth proportional to 890,313,047.85, 1,228,628,070.18 and 508,828,718.40 is: 702,181,381.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,313,047.85 : 1,228,628,070.18 = 508,828,718.40 : x
  2. Step 2: Convert to fraction form
    890,313,047.85/1,228,628,070.18 = 508,828,718.40/x
  3. Step 3: Cross multiply
    890,313,047.85x = 1,228,628,070.18 × 508,828,718.40
  4. Step 4: Simplify right side
    890,313,047.85x = 625,161,246,339,954,688
  5. Step 5: Solve for x
    x = 625,161,246,339,954,688/890,313,047.85
  6. Step 6: Final answer
    x = 702,181,381.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.