Home / 938,012,581.18-1,407,018,915.52-642,616,415.74

Finding the Fourth Proportional to 938,012,581.18, 1,407,018,915.52 and 642,616,415.74

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Solution

The fourth proportional to 938,012,581.18, 1,407,018,915.52 and 642,616,415.74 is: 963,924,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,012,581.18 : 1,407,018,915.52 = 642,616,415.74 : x
  2. Step 2: Convert to fraction form
    938,012,581.18/1,407,018,915.52 = 642,616,415.74/x
  3. Step 3: Cross multiply
    938,012,581.18x = 1,407,018,915.52 × 642,616,415.74
  4. Step 4: Simplify right side
    938,012,581.18x = 904,173,452,369,844,224
  5. Step 5: Solve for x
    x = 904,173,452,369,844,224/938,012,581.18
  6. Step 6: Final answer
    x = 963,924,653.58

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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.