Home / 640,616,799.60-960,925,199.40-435,031,801.20

Finding the Fourth Proportional to 640,616,799.60, 960,925,199.40 and 435,031,801.20

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Solution

The fourth proportional to 640,616,799.60, 960,925,199.40 and 435,031,801.20 is: 652,547,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,616,799.60 : 960,925,199.40 = 435,031,801.20 : x
  2. Step 2: Convert to fraction form
    640,616,799.60/960,925,199.40 = 435,031,801.20/x
  3. Step 3: Cross multiply
    640,616,799.60x = 960,925,199.40 × 435,031,801.20
  4. Step 4: Simplify right side
    640,616,799.60x = 418,033,020,313,451,136
  5. Step 5: Solve for x
    x = 418,033,020,313,451,136/640,616,799.60
  6. Step 6: Final answer
    x = 652,547,701.80

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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.