Home / 869,807,477.40-1,200,334,496.40-478,666,901.40

Finding the Fourth Proportional to 869,807,477.40, 1,200,334,496.40 and 478,666,901.40

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Solution

The fourth proportional to 869,807,477.40, 1,200,334,496.40 and 478,666,901.40 is: 660,560,421.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,807,477.40 : 1,200,334,496.40 = 478,666,901.40 : x
  2. Step 2: Convert to fraction form
    869,807,477.40/1,200,334,496.40 = 478,666,901.40/x
  3. Step 3: Cross multiply
    869,807,477.40x = 1,200,334,496.40 × 478,666,901.40
  4. Step 4: Simplify right side
    869,807,477.40x = 574,560,394,035,317,440
  5. Step 5: Solve for x
    x = 574,560,394,035,317,440/869,807,477.40
  6. Step 6: Final answer
    x = 660,560,421.66

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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.