Home / 1,223,642,808.95-1,688,627,319.36-666,725,856.01

Finding the Fourth Proportional to 1,223,642,808.95, 1,688,627,319.36 and 666,725,856.01

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Solution

The fourth proportional to 1,223,642,808.95, 1,688,627,319.36 and 666,725,856.01 is: 920,081,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,642,808.95 : 1,688,627,319.36 = 666,725,856.01 : x
  2. Step 2: Convert to fraction form
    1,223,642,808.95/1,688,627,319.36 = 666,725,856.01/x
  3. Step 3: Cross multiply
    1,223,642,808.95x = 1,688,627,319.36 × 666,725,856.01
  4. Step 4: Simplify right side
    1,223,642,808.95x = 1,125,851,494,975,479,296
  5. Step 5: Solve for x
    x = 1,125,851,494,975,479,296/1,223,642,808.95
  6. Step 6: Final answer
    x = 920,081,813.70

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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.