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Finding the Fourth Proportional to 448,470,918.40, 671,430,919.20 and 448,470,918.40

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Solution

The fourth proportional to 448,470,918.40, 671,430,919.20 and 448,470,918.40 is: 671,430,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,470,918.40 : 671,430,919.20 = 448,470,918.40 : x
  2. Step 2: Convert to fraction form
    448,470,918.40/671,430,919.20 = 448,470,918.40/x
  3. Step 3: Cross multiply
    448,470,918.40x = 671,430,919.20 × 448,470,918.40
  4. Step 4: Simplify right side
    448,470,918.40x = 301,117,240,975,780,224
  5. Step 5: Solve for x
    x = 301,117,240,975,780,224/448,470,918.40
  6. Step 6: Final answer
    x = 671,430,919.20

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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.